Spin waves and Dirac magnons in a honeycomb-lattice zigzag antiferromagnet BaNi2(AsO4)2

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dc.citation.articleNumber214432en_US
dc.citation.issueNumber21en_US
dc.citation.journalTitlePhysical Review Ben_US
dc.citation.volumeNumber104en_US
dc.contributor.authorGao, Binen_US
dc.contributor.authorChen, Tongen_US
dc.contributor.authorWang, Chongen_US
dc.contributor.authorChen, Lebingen_US
dc.contributor.authorZhong, Ruidanen_US
dc.contributor.authorAbernathy, Douglas L.en_US
dc.contributor.authorXiao, Dien_US
dc.contributor.authorDai, Pengchengen_US
dc.date.accessioned2022-01-21T20:47:39Zen_US
dc.date.available2022-01-21T20:47:39Zen_US
dc.date.issued2021en_US
dc.description.abstractThe topological properties of massive and massless fermionic quasiparticles have been intensively investigated over the past decade in topological materials without magnetism. Recently, the bosonic analogs of such quasiparticles arising from spin waves have been reported in a two-dimensional (2D) honeycomb-lattice ferromagnet/antiferromagnet and a 3D antiferromagnet. Here, we use time-of-flight inelastic neutron scattering to study spin waves of the S=1 honeycomb-lattice antiferromagnet BaNi2(AsO4)2, which has a zigzag antiferromagnetic (AFM) ground state identical to that of the Kitaev quantum spin liquid candidate α−RuCl3. We determine the magnetic exchange interactions in the zigzag AFM ordered phase, and show that spin waves in BaNi2(AsO4)2 have symmetry-protected Dirac points inside the Brillouin zone boundary. These results provide a microscopic understanding of the zigzag AFM order and associated Dirac magnons in honeycomb-lattice magnets, and are also important for establishing the magnetic interactions in Kitaev quantum spin liquid candidates.en_US
dc.identifier.citationGao, Bin, Chen, Tong, Wang, Chong, et al.. "Spin waves and Dirac magnons in a honeycomb-lattice zigzag antiferromagnet BaNi2(AsO4)2." <i>Physical Review B,</i> 104, no. 21 (2021) American Physical Society: https://doi.org/10.1103/PhysRevB.104.214432.en_US
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.104.214432en_US
dc.identifier.urihttps://hdl.handle.net/1911/111944en_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.titleSpin waves and Dirac magnons in a honeycomb-lattice zigzag antiferromagnet BaNi2(AsO4)2en_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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